Both types of rocks form under high pressure, but metamorphic also requires heat.
The answer is R horizon.
The soil is made up of layers, called horizons, which are parallel to soil crust. These horizons are from top to bottom:
O - contains organic matter.
A - contains organic matter mixed mineral matter.
B - contains accumulated mineral or organic compounds.
<u>C</u> - consists of parental material.
<u>R</u> - consists of bedrock, masses of hard rock.
Thus, R horizon is below the C horizon.
The answer is b it occurs in plant animals and bacteria
Molecular biology describes the two-step process, transcription and translation, by which the information in genes flows into.
